Why Local Garage Roofs Fail: The Technical Reality
If you are searching for ‘garage roof repairs near me’ in Brighton, Hove, or Worthing, you are likely dealing with water ingress that has finally breached the decking. Over my 18 years in the trade, I’ve seen countless outbuilding roofs fail across Sussex. The core issue is rarely a sudden puncture; it is progressive material degradation exacerbated by our coastal climate.
Thermal Movement and Blistering
Most older garage roofs were covered with traditional pour-and-roll felt. Over time, UV exposure strips the protective oils from the bitumen. As temperatures fluctuate, the rigid felt expands and contracts—this is known as thermal movement. Because it has lost its elasticity, the felt cracks. Alternatively, moisture trapped underneath vaporises in the summer sun, causing blisters that eventually split, leading to hidden leaks.
Ponding Water and Decking Deflection
Garages often have minimal falls (the slight slope required for drainage). When timber joists or the plywood decking begins to rot from minor, unnoticed leaks, the structure sags. This creates ‘ponding’—standing water that accelerates the breakdown of the felt. If water is actively pouring onto your vehicle or stored tools, you should book an urgent leak assessment to prevent the underlying timber from completely collapsing.
The Proper Repair Process for Sussex Garages
I don’t believe in temporary patch jobs with liquid sealants. Coastal winds and salt spray in Brighton and Worthing will destroy poor repairs in months. A permanent fix involves a highly technical, systematic approach:
- Core Decking Inspection: I strip back the failed membrane to inspect the structural decking. If the OSB3 or plywood is compromised by dry rot or damp, it must be replaced to ensure a solid substrate.
- High-Performance SBS-Modified Bitumen: I install a modern, three-layer SBS (Styrene Butadiene Styrene) torch-on felt system. SBS is highly elastic, meaning it flexes with structural shifting and thermal movement rather than tearing.
- Perimeter Edge Detailing: Properly forming drip edges and ensuring watertight upstands against adjacent masonry prevents capillary action from pulling rainwater backwards into the fascia boards or masonry.
Instant Pricing Without the Guesswork
You shouldn’t have to wait weeks for a contractor to drive out just to give you a rough estimate. I perform repairs across Brighton, Hove, and surrounding areas, and I believe in complete transparency. If you know your outbuilding’s dimensions, you can use the online calculator on my website to get an exact, instant garage roof cost for your specific property. You get a precise figure for materials and labour in 30 seconds—no hidden fees, just honest, technical roofing.